Adjustable backrest



FIG. 1 is a front elevational view of the adjustable backrest of thepresent invention;

FIG. 2 is a back elevational view of the adjustable backrest of FIG. 1;

FIG. 3 is a left side elevational view of the adjustable backrest ofFIG. 1;

FIG. 4 is a right side elevational view of the adjustable backrest ofFIG. 1;

FIG. 5 is a top plan view of the adjustable backrest of FIG. 1; and,

FIG. 6 is a bottom plan view of the adjustable backrest of FIG. 1.

The fragmented cross-hatching shown on the cushion member is understoodto represent fabric and would be continuous throughout.

FIGS. 5 and 6 have been shown on an enlarged scale with respect to theother views.

The ornamental design for an adjustable backrest, as shown anddescribed.